Andrew Sparrow’s rolling coverage of all the day’s political developments as they happen, including David Cameron’s and Ed Miliband’s morning interviews, Labour’s health launch and Sir Jeremy Heywood being questioned by MPs about the Iraq inquiry

John Mann MP has released correspondence from 2008 between Paul Tucker of the Bank of England and Jeremy Heywood, then a senior civil servant in the Cabinet Office, ahead of a hearing with Tucker over the Libor scandal at the Treasury select committee.